It is on December 11st, 2012, Application No. 201280053290.5, entitled " conduction the applying date that the application, which is,The divisional application of the application for a patent for invention of piece and touch panel ".
Embodiment
Hereinafter, the preferred embodiment of the present invention is illustrated with reference to the accompanying drawings.Although the present invention is preferable to carry out using followingMode is illustrated, but can be changed without departing from the scope of the invention using a variety of methods, can be with profitWith the other embodiment beyond present embodiment.Therefore, whole changes in the scope of the invention are included in claim.
Hereinafter, 1~Fig. 7 of reference picture illustrates the conducting strip and touch panel of present embodiment.In addition, in this specificationIn, represent that "~" of number range means the numerical value recorded before and after it as lower limit and higher limit.
As shown in FIG. 1 to 3, the conducting strip 10 of the first touch panel of present embodiment is configured to, above-mentioned conductionPiece 12A (12B) be provided with matrix 14A the electrode pattern 16A (16B) that is made up of metal fine and with electrode pattern 16AThe electrode terminal 60A (60B) of the end electrical connection of (16B), in above-mentioned conducting strip 12A (12B), electrode pattern 16A (16B)Transmitance be more than 83%, when electrode pattern 16A (16B) transmitance is expressed as into a%, electrode terminal 60A's (60B)Transmitance is (a-20) more than % (a-3) below %.In addition, as another way, the first touch panel of present embodiment is usedConducting strip 10 be configured to, above-mentioned conducting strip 12A (12B) is provided with the electrode figure being made up of metal fine on matrix 14ACase 16A (16B) and the electrode terminal 60A (60B) electrically connected with electrode pattern 16A (16B) end, in above-mentioned conducting stripIn 12A (12B), electrode pattern 16A (16B) aperture opening ratio is more than 90%, by electrode pattern 16A (16B) aperture opening ratio tableWhen being shown as b%, electrode terminal 60A (60B) aperture opening ratio is (b-20) more than % (b-0.1) below %.
As shown in Figure 1 and Figure 2, the conducting strip 10 of the second touch panel of present embodiment is that have by metal fineThe electrode pattern 16A's (16B) of composition and electrode terminal 60A (60B) that is electrically connected with electrode pattern 16A (16B) end leadsElectric piece 12A (12B), electrode terminal 60A (60B) is configured to comprising the frame shape 64 being made up of metal fine.
As shown in Figure 1 and Figure 2, the conducting strip 10 of the 3rd touch panel of present embodiment is that have by metal fineThe electrode pattern 16A's (16B) of composition and electrode terminal 60A (60B) that is electrically connected with electrode pattern 16A (16B) end leadsElectric piece 12A (12B), electrode terminal 60A (60B) is configured to comprising the mesh shape 66 being made up of grid 68, and the grid 68 is by goldBelong to fine rule to constitute.
Also, as shown in Fig. 4 A or Fig. 4 B and Fig. 5 A, the conducting strip 10 of the touch panel of present embodiment is stacking1st conducting strip 12A and the 2nd conducting strip 12B and constitute.
As shown in Fig. 4 A, Fig. 4 B and Fig. 6 A, the 1st conducting strip 12A has the 1st transparent base 14A's (reference picture 5A)The 1st electrode pattern 16A formed on one interarea.1st electrode pattern 16A is made up of multiple grid based on metal fine.1stElectrode pattern 16A has to be extended and in 2nd direction (y direction) vertical with the 1st direction on the 1st direction (x directions) respectivelyThe 1st conductive pattern 18A of more than 2 of upper arrangement, make the 1st non-conductive pattern of each the 1st conductive pattern 18A electrical separation20A.1st non-conductive pattern 20A is formed with multiple disconnection portion 22A beyond the crosspoint of metal fine.Utilize multiple disconnection portions22A makes each the 1st conductive pattern 18A electrical separation.
The line width that constituting the 1st electrode pattern 16A metal fine has is less than 30 μm, preferably less than 15 μm, more excellentChoosing is less than 10 μm, more preferably less than 9 μm, preferably less than 7 μm.Preferably 1 μm of the lower limit of line width.In addition, the 1st conductive patternThe non-conductive pattern 20A of case 18A and the 1st substantially have identical line width, but in fig. 6 for clear and definite 1st conductive pattern 18AWith the 1st non-conductive pattern 20A, and turgidly illustrated, make the 1st conductive pattern 18A line width thicker, make the 1st non-conductive figureCase 20A line width attenuates.1st conductive pattern 18A line width and the 1st non-conductive pattern 20A line width can be with identical, can also notTogether.It is preferred that both line widths are identicals.If its reason is that line width is different, visual deterioration is caused sometimes.1st electrodePattern 16A metal fine is made up of the conductive material such as the metal materials such as gold, silver, copper or metal oxide, is led by opaqueElectric material is constituted.
1st electrode pattern 16A includes the multiple grid 24A being made up of the metal fine intersected.Grid 24A is included by metalThe open area that fine rule is surrounded.There is grid 24A grid spacing Pa, spacing pa to be less than more than 300 μm 800 μm, preferablyLess than more than 400 μm 600 μm.1st conductive pattern 18A grid 24A and the 1st non-conductive pattern 20A grid 24A substantially haveThere is identical size.
1st non-conductive pattern 20A grid 24A has disconnection portion 22A beyond the cross part of metal fine.Structure is not neededAll grid 24A into the 1st non-conductive pattern 20A have disconnection portion 22A.As long as the 1st non-conductive pattern 20A can realize adjacentThe 1st conductive pattern 18A between electrical separation.Disconnection portion 22A length is preferably less than 60 μm.Disconnection portion 22A'sThe lower limit of length is preferably 10 μm, preferably more preferably 15 μm, 20 μm.The higher limit of disconnection portion 22A length is preferably50 μm, preferably more preferably 40 μm, 30 μm.It is preferred that scope be less than more than 10 μm 50 μm, preferably more than 15 μm 30 μmBelow.In addition, the scope on forming disconnection portion 22A, such as showed using the deviation of line density.Here, line densityDeviation be total fine rule length in unit sub-box deviation, may be defined as ± (total line length maximum-total line length minimum value)/totalLine length average value/2 (%).Scope on forming disconnection portion 22A, the deviation of preferably line density is ± 15%, preferably ±10%.
In above-mentioned touch panel with conducting strip 10, grid 24A has the shape of almost diamond.Here, almost diamondShape representation diagonal substantial orthogonality parallelogram.However, it is possible to think other polygon-shaped.In addition, exceptThe shape on one side can also be set to curved shape outside linear, arc-shaped can also be set to.It is being set to the situation of arc-shapedIt is lower or, 2 relative sides are the arc-shapeds protruded towards outside, and other 2 relative sides are the arc-shapeds inwards protruded.It is continuously wavy linear alternatively, it is also possible to the circular arc and the circular arc that inwards protrudes that are set to protrude towards outside by the shape on each sideShape.It is of course also possible to which the shape on each side is set into sine curve.
Each the 1st conductive pattern 18A is that possess the expanded width portion and width being alternately arranged along the 1st direction (x directions)Degree reduces the so-called diamond pattern of part.Equally, each the 1st non-conductive pattern 20A possesses along the 1st direction (x directions) alternatelyThe expanded width portion of configuration and reduced width part.1st conductive pattern 18A expanded width portion and reduced width partOrder is opposite with the 1st non-conductive pattern 20A expanded width portion and the order of reduced width part.In addition, each the 1st conductionPattern 18A is not limited to the shape (strip) or the saw of Rack of above-mentioned diamond pattern or the banding of defined widthOdontoid etc..As composition, the electrode shape applied in existing ITO nesa coating can be enumerated.
Each a 1st conductive pattern 18A end is electrically connected via the 1st electrode terminal 60A with the 1st outside wiring 62A.On the other hand, each the 1st conductive pattern 18A another end is open end.In addition, each the 1st conductive pattern 18A's is anotherIndividual end is the pattern form same with an end or the shape with terminal in addition to not electrically connected with outside wiring.
As shown in Fig. 4 A, Fig. 4 B and Fig. 6 B, the 2nd conducting strip 12B has the 2nd transparent base 14B's (reference picture 5A)The 2nd electrode pattern 16B formed on one interarea.2nd electrode pattern 16B is made up of multiple grid based on metal fine.2ndElectrode pattern 16B has to be extended and on 1st direction (x direction) vertical with the 2nd direction on the 2nd direction (y directions) respectivelyArrangement the 2nd conductive pattern 18B of more than 2 with make the 2nd non-conductive pattern of each the 2nd conductive pattern 18B electrical separation20B.In the 2nd non-conductive pattern 20B, multiple disconnection portion 22B are formed with beyond the crosspoint of metal fine.Broken using multipleLine portion 22B makes each the 2nd conductive pattern 18B electrical separation.
The metal fine for constituting the 2nd electrode pattern 16B is substantial with the metal fine with constituting the 1st electrode pattern 16AIdentical line width.In addition, the 2nd conductive pattern 18B and the 2nd non-conductive pattern 20B have substantially the same line width, but in Fig. 6 BIn for clear and definite 2nd conductive pattern 18B and the 2nd non-conductive pattern 20B, and turgidly illustrated, make the 2nd conductive pattern 18BLine width it is thicker, the 2nd non-conductive pattern 20B line width is attenuated.2nd conductive pattern 18B line width and the 2nd non-conductive pattern20B line width can be with identical, can also be different.It is preferred that both line widths are identicals.If its reason is that line width is different, haveWhen can cause visual deterioration.
2nd electrode pattern 16B metal fine is by the metal fine identical conductive material structure with the 1st electrode pattern 16AInto.
2nd electrode pattern 16B includes the multiple grid 24B being made up of the metal fine intersected.Grid 24B is included by metalThe open area that fine rule is surrounded.There is grid 24B grid spacing Pb, spacing Pb to be less than more than 300 μm 800 μm, preferablyLess than more than 400 μm 600 μm.The 2nd conductive pattern 18B non-conductive pattern 20B of grid 24B and the 2nd grid 24B has essenceUpper identical size.
2nd non-conductive pattern 20B grid 24B has disconnection portion 22B beyond the cross part of metal fine.Structure is not neededAll grid 24B into the 2nd non-conductive pattern 20B have disconnection portion 22B.As long as the 2nd non-conductive pattern 20B can realize adjacentThe 2nd conductive pattern 18B between electrical separation.Disconnection portion 22B length is preferably less than 60 μm.Disconnection portion 22B'sPreferably 10 μm of the lower limit of length, preferably more preferably 15 μm, 20 μm.The higher limit of disconnection portion 22B length is preferably 50 μm,More preferably 40 μm, preferably 30 μm.It is preferred that scope be less than more than 10 μm 50 μm, preferably less than more than 15 μm 30 μm.In addition, the scope on forming disconnection portion 22B, such as can be showed using the deviation of line density.Here, the deviation of line density isThe deviation of total fine rule length in unit sub-box, may be defined as ± (total line length maximum-total line length minimum value)/total line length and is averagedIt is worth/2 (%).The deviation for forming the disconnection portion 22B preferred line density of scope is ± 15%, more preferably ± 10%.
In above-mentioned touch panel with conducting strip 10, grid 24B has the shape of almost diamond.Here, almost diamondShape representation diagonal substantial orthogonality parallelogram.In addition, can also be by the shape on one side in addition to linearCurved shape is set to, arc-shaped can also be set to.In the case where being set to arc-shaped or, 2 relative sides are towards outsideThe arc-shaped of protrusion, other 2 relative sides are the arc-shapeds inwards protruded.Alternatively, it is also possible to which the shape on each side is set toThe circular arc protruded towards outside and the continuous wavy wire shaped of the circular arc inwards protruded.It is of course also possible to by the shape on each sideIt is set to sine curve.
Each the 2nd conductive pattern 18B possesses the expanded width portion and width being alternately arranged along the 2nd direction (y directions)Reduce part.Equally, each the 2nd non-conductive pattern 20B possesses the width expansion portion being alternately arranged along the 2nd direction (y directions)Divide and reduced width part.2nd conductive pattern 18B expanded width portion and the order of reduced width part and the 2nd non-conductivePattern 20B expanded width portion and the order of reduced width part are opposite.
Each a 2nd conductive pattern 18B end is electrically connected via the 2nd electrode terminal 60B with the 2nd outside wiring 62B.On the other hand, each the 2nd conductive pattern 18B another end is open end.
Also, for example when the 1st conducting strip 12A of stacking on the 2nd conducting strip 12B constitutes touch panel conducting strip 10When, as shown in fig. 7, being configured with the 1st electrode pattern 16A and the misaligned modes of the 2nd electrode pattern 16B.Now, it is conductive with the 1stThe width contracting relative and the 1st conductive pattern 18A with the 2nd conductive pattern 18B reduced width portion of pattern 18A reduced width portionThe mode that small portion and the 2nd conductive pattern 18B reduced width portion intersect configures the 1st electrode pattern 16A and the 2nd electrode pattern 16B.As a result, combination pattern 70 is formed by the 1st electrode pattern 16A and the 2nd electrode pattern 16B.In addition, the 1st electrode pattern 16A and2 electrode pattern 16B each line width is substantially the same.In addition, grid 24A and grid 24B each size is substantiallyIdentical.But, in Fig. 6 A and Fig. 6 B, closed for clear and definite 1st electrode pattern 16A and the 2nd electrode pattern 16B positionSystem, the 1st electrode pattern 16A line width is shown must be thicker than the 2nd electrode pattern 16B line width.
In combination pattern 70, when viewed from above, sub-box is formed by grid 24A and grid 24B.That is, grid 24A'sCross part is configured in grid 24B open area.In addition, sub-box have grid spacing Ps, spacing Ps be grid 24A andLess than more than 150 μm 400 μm of the half of grid 24B grid spacing Pa, Pb, preferably less than more than 200 μm 300 μm.
Position of the 1st non-conductive pattern 20A disconnection portion 22A formation beyond grid 24A cross part, the 2nd is non-conductivePosition of the pattern 20B disconnection portion 22B formation beyond grid 24B cross part.As a result, in combination pattern 70, it can preventDue to visual deterioration caused by disconnection portion 22A and disconnection portion 22B.
Especially, the 2nd conductive pattern 18B metal fine is configured on the position relative with disconnection portion 22A.In addition, withThe 1st conductive pattern 18A metal fine is configured on position relative disconnection portion 22B.2nd conductive pattern 18B metal fine hidesDisconnection portion 22A is kept off, the 1st conductive pattern 18A metal fine blocks disconnection portion 22B.Therefore, in combination pattern 70, from aboveDuring observation, disconnection portion 22A and disconnection portion 22B are not readily apparent, so visuality can be improved.It is excellent when considering to improve visualDisconnection portion 22A length and the line width of the 2nd conductive pattern 18B metal fine is selected to meet line width × 1<Disconnection portion<Line width × 10Relational expression.Equally, the line width of disconnection portion 22B length and the 1st conductive pattern 18A metal fine preferably meets line width × 1<Disconnection portion<The relational expression of line width × 10.
Then, when using the touch panel conducting strip 10 as touch panel, formed and protected on the 1st conducting strip 12ASheath (not shown).The 1st outside connects up 62A and led from the 2nd derived from the 1st conducting strip 12A multiple 1st conductive pattern 18AIC circuits of the 2nd outside wiring 62B for example with control scanning is connected derived from electric piece 12B multiple 2nd conductive pattern 18B.
In order to reduce the outer region of the deviation liquid crystal display device display picture in touch panel conducting strip 10 as far as possibleArea, preferably linearly the outsides of the 1st conductive pattern 18A of arrangement and the 1st connect up 62A each connecting portion, linearly arrangeThe outsides of 2nd conductive pattern 18B and the 2nd wiring 62B each connecting portion.
By making finger tip contacts protective layer, make between the 1st conductive pattern 18A relative with finger tip and the 2nd conductive pattern 18BStatic capacity change.Its variable quantity of IC electric circuit inspections, the position of finger tip is calculated according to the variable quantity.RespectiveThe computing is carried out between 1 conductive pattern 18A and the 2nd conductive pattern 18B.Therefore, even if contacting the finger tip of more than 2 simultaneously,The position of each finger tip can be detected.
So, in touch panel with conducting strip 10, when using the touch panel with conducting strip 10 come applied to for example throwingDuring the touch panel of shadow type electrostatic capacity, because its sheet resistance is small, response speed can be accelerated, can promote to touchTouch the in large size of panel.
But, on it is existing in the electrodes use metal fine touch panel, electrode terminal 60A, 60B in order toHigh conductivity, it is sub (planar terminal) as butt end, therefore when combined display and touch panel are acted, in touch panelSensing region (electrode pattern) in because electrode terminal blocks the light that display is sent, in the electrode tip of sensing regionIt is sub dimmed part nearby occur, the display for watching this position is difficult to sometimes.
Therefore, the present invention is set to the first~the 3rd touch panel conducting strip of following explanation.
(conducting strip of the first touch panel)
The conducting strip of the first touch panel of the present invention is configured to, and conducting strip 12A (12B) is provided with matrix 14AThe electrode pattern 16A (16B) being made up of the metal fine and electrode terminal 60A electrically connected with electrode pattern 16A (16B) end(60B), in above-mentioned conducting strip 12A (12B), electrode pattern 16A (16B) transmitance is more than 83%, by electrode patternWhen 16A (16B) transmitance is expressed as a%, electrode terminal 60A (60B) transmitance be (a-20) more than % (a-3) % withUnder.More preferably (a-15) more than % (a-3) below %, more preferably (a-3) more than (a-10) below, preferably (a-5) withThe upper scope of (a-3) below.
In addition, being configured to as the other manner of the conducting strip of the first touch panel of the present invention, conducting strip 12A(12B) is provided with the electrode pattern 16A (16B) that is made up of metal fine and with electrode pattern 16A's (16B) on matrix 14AThe electrode terminal 60A (60B) of end electrical connection above-mentioned conducting strip 12A (12B), in conducting strip 12A (12B), electrode pattern16A (16B) aperture opening ratio is more than 90%, when electrode pattern 16A (16B) aperture opening ratio is expressed as into b%, electrode terminal60A (60B) aperture opening ratio is (b-20) more than % (b-0.1) below %.More preferably (b-0.3) more than (b-10) below, mostIt is the scope of (b-0.3) below more than (b-5) well.
Fig. 1 shows that electrode terminal 60A (60B) is the frame shape 64 being made up of metal fine.Here, when setting electrode patternWhen the line width of 16A (16B) fine rule is A (μm), the line width B (μm) of electrode terminal 60A (60B) frame shape preferably meet B >=2A or B >=A+5 (μm).Preferably less than 30 μm of the line width a (μm) of the fine rule of above-mentioned electrode pattern.
As shown in Figure 1, by making electrode terminal 60A (60B) turn into the frame shape 64 being made up of metal fine, electrode pattern16A (16B) transmitance is more than 83%, when electrode pattern 16A (16B) transmitance is expressed as into a%, can make electrodeTerminal 60A (60B) transmitance is (a-20) more than % (a-3) below %.
In addition, by making electrode terminal 60A (60B) turn into the frame shape 64 being made up of metal fine, electrode pattern 16AThe aperture opening ratio of (16B) is more than 90%, when electrode pattern 16A (16B) aperture opening ratio is expressed as into b%, can make electrode tipThe aperture opening ratio of sub- 60A (60B) is (b-20) more than % (b-0.1) below %.
Therefore, by making electrode terminal 60A (60B) turn into the frame shape 64 being made up of metal fine, with existing butt endSub (planar terminal) is different, in the sensing region (electrode pattern) of touch panel, and electrode terminal, which is difficult to block display, to be sentLight, therefore no longer there is near the electrode terminal of sensing region dimmed part.Therefore, in the electrode terminal of sensing regionNearby do not destroy visuality.
Fig. 2 shows that electrode terminal 60A (60B) is the situation for the mesh shape 66 being made up of grid 68, and the grid 68 is by goldBelong to fine rule to constitute.Here, the spacing of electrode terminal 60A (60B) mesh shape 66 is preferably than between electrode pattern 16A (16B)Away from close, more preferably less than the 3/4 of electrode pattern 16A (16B) spacing, more preferably less than 2/3, preferably 1/2.By makingThe mesh shape of electrode terminal is smaller than electrode pattern, can improve the electrical characteristic of electrode terminal, is able to maintain that signal is examinedThe stability of survey.The spacing of specific electrode terminal 60A (60B) mesh shape 66 is less than more than 50 μm 300 μm, more preferablyIt is less than more than 50 μm 250 μm.In addition, electrode pattern 16A (16B) spacing be with grid 24A (24B) edge lengths substantiallyEqual value.
As shown in Figure 2, by making electrode terminal 60A (60B) turn into the grid being made up of the grid 68 based on metal fineShape 66, electrode pattern 16A (16B) transmitance is more than 83%, is expressed as by electrode pattern 16A (16B) transmitanceDuring a%, the transmitance that can make electrode terminal 60A (60B) is (a-20) more than % (a-3) below %.
In addition, by making electrode terminal 60A (60B) turn into the mesh shape 66 being made up of the grid 68 of metal fine, electricityPole figure case 16A (16B) aperture opening ratio is more than 90%, when electrode pattern 16A (16B) aperture opening ratio is expressed as into b%, can be withThe aperture opening ratio for making electrode terminal 60A (60B) is (b-20) more than % (b-0.1) below %.
Therefore, it is and existing thick by making electrode terminal 60A (60B) turn into the mesh shape 66 that is made up of metal fineTerminal (planar terminal) is different, in the sensing region (electrode pattern) of touch panel, and electrode terminal is difficult to block display hairThe light gone out, so no longer occurring dimmed part near the electrode terminal of sensing region.Therefore, in the electrode tip of sensing regionIt is sub nearby not destroy visuality.
Fig. 3 shows the situation that electrode terminal 60A (60B) is made up of frame shape 64 and mesh shape 66, the frame shape 64It is made up of metal fine, the mesh shape 66 is made up of grid 68, the grid 68 is made up of metal fine rule.
As shown in Figure 3, electrode terminal 60A (60B) is made up of frame shape 64 and mesh shape 66, and the frame shape 64 is by metalFine rule is constituted, and the mesh shape 66 is made up of grid 68, and the grid 68 is made up of metal fine rule, therefore, electrode pattern 16AThe transmitance of (16B) is more than 83%, when electrode pattern 16A (16B) transmitance is expressed as into a%, makes electrode terminal 60AThe transmitance of (60B) is (a-20) more than % (a-3) below %.
In addition, electrode terminal 60A (60B) is made up of frame shape 64 and mesh shape 66, the frame shape 64 is by metal fineConstitute, the mesh shape 66 is made up of grid 68, and the grid 68 is made up of metal fine rule, thus, electrode pattern 16AThe aperture opening ratio of (16B) is more than 90%, when electrode pattern 16A (16B) aperture opening ratio is expressed as into b%, makes electrode terminal 60AThe aperture opening ratio of (60B) is (b-20) more than % (b-0.1) below %.
Therefore, electrode terminal 60A (60B) is made up of frame shape 64 and mesh shape 66, and the frame shape 64 is by metal fineConstitute, the mesh shape 66 is made up of grid 68, and the grid 68 is made up of metal fine rule, so sub with existing butt end(planar terminal) is different, and in the sensing region (electrode pattern) of touch panel, electrode terminal is difficult to block what display was sentLight, so as to no longer occur dimmed part near the electrode terminal of sensing region.Therefore, it is attached in the electrode terminal of sensing regionClosely do not destroy visuality.
In addition, in Fig. 2, Fig. 3 mesh shape 66, grid 68 has the shape of almost diamond.Here, almost diamondThe parallelogram of shape representation diagonal substantial orthogonality.However, it is possible to think other polygon-shaped.In addition, except straightThe shape on one side can also be set to curved shape outside wire, arc-shaped can also be set to.In the case where being set to arc-shaped,Can also be that 2 relative sides are the arc-shapeds protruded towards outside, and other 2 relative sides are the arc-shapeds inwards protruded.SeparatelyOutside, the shape on each side can also be set to the circular arc protruded towards outside and the circular arc inwards protruded is continuous wavy linearShape.It is of course also possible to which the shape on each side is set into sine curve.
The part electrically connected in the electrode terminal 60A (60B) of the present invention with electrode pattern and outside wiring 62A (62B)Between resistance be preferably the Ω of 1 Ω~100 scope.In addition, when electrode terminal 60A (60B) includes grid as Fig. 2, Fig. 3During shape 66, electrode terminal 60A (60B) sheet resistance value preferably turns into the Ω of 4 Ω/more than sq. 80/below sq. scope, mostTurn into the Ω of 10 Ω/more than sq. 40/below sq. scope well.
In addition, the light-transmitting portion in addition to metal fine that aperture opening ratio is electrode terminal 60A (60B) accounts for overall ratioExample, for example, 15 μm of line width, the aperture opening ratio of the square lattice 68 of 300 μm of spacing are 90%.
(conducting strip of the second touch panel)
The conducting strip of the second touch panel of the present invention is configured to, and conducting strip 12A (12B) is provided with matrix 14AThe electrode pattern 16A (16B) being made up of the metal fine and electrode terminal 60A electrically connected with electrode pattern 16A (16B) end(60B), in above-mentioned conducting strip 12A (12B), electrode terminal 60A (60B) includes the frame shape 64 being made up of metal fine.
Fig. 1 shows that electrode terminal 60A (60B) is the situation for the frame shape 64 being made up of metal fine.
Here, when setting electrode pattern 16A (16B) line width of fine rule as A (μm), electrode terminal 60A (60B) frame shapeThe line width B (μm) of shape preferably meets B >=2A or B >=A+5 (μm).The more preferably scope of 50 μm >=B >=10 μm, preferably 30 μmThe scope of >=B >=15 μm.In addition, frame shape 64 is substantially rectangular shape, its transverse width is the maximum transversal with electrode patternThe roughly the same length of width, but it is also possible to less than the maximum lateral width of electrode pattern.In addition, ought far smaller than electrode patternMaximum lateral width when, resistance becomes big, thus the transverse width be preferably the 1/3 of the maximum lateral width of electrode pattern withOn, preferably more than 1/2.
As shown in Figure 1, it is and existing by making electrode terminal 60A (60B) turn into the frame shape 64 that is made up of metal fineButt end (planar terminal) is different, and electrode terminal is difficult to block display hair in the sensing region (electrode pattern) of touch panelThe light gone out, therefore no longer there is near the electrode terminal of sensing region dimmed part.Therefore, in the electrode tip of sensing regionIt is sub nearby not destroy visuality.In addition, in the case of using such shape, also having the effect that：It will not increaseThe noise of electric signal, it is possible to decrease the usage amount of constituent material, it is possible to decrease the manufacturing cost of conducting film.
Fig. 3 shows that electrode terminal 60A (60B) is made up of frame shape 64 and mesh shape 66, and the frame shape 64 is thin by metalLine is constituted, and the mesh shape 66 is made up of grid 68, and the grid 68 is made up of metal fine rule.Here, electrode terminal 60ASpacing of the spacing of the mesh shape 66 of (60B) preferably than electrode pattern 16A (16B) is close, more preferably electrode pattern 16ALess than the 3/4 of the spacing of (16B), more preferably less than 2/3, preferably 1/2.By the spacing for the mesh shape for making electrode terminalLess than electrode pattern, the electrical characteristic of electrode terminal can be improved, the stability of signal detection is able to maintain that.Specific electrode terminalThe spacing of 60A (60B) mesh shape 66 is less than more than 50 μm 300 μm, more preferably less than more than 50 μm 250 μm.In addition,Electrode pattern 16A (16B) spacing is the value roughly equal with grid 24A (24B) edge lengths.
As shown in Figure 3, electrode terminal 60A (60B) is made up of frame shape 64 and mesh shape 66, and the frame shape 64 is by metalFine rule is constituted, and the mesh shape 66 is made up of grid 68, and grid 68 is made up of metal fine rule, so sub with existing butt end(planar terminal) is different, and electrode terminal is difficult to block what display was sent in the sensing region (electrode pattern) of touch panelLight, so as to no longer occur dimmed part near the electrode terminal of sensing region.Therefore, it is attached in the electrode terminal of sensing regionClosely do not destroy visuality.
In addition, in Fig. 3 mesh shape 66, grid 68 has the shape of almost diamond.Here, the shape of almost diamondRepresent the parallelogram of diagonal substantial orthogonality.However, it is possible to think other polygon-shaped.In addition, except linearOutside the shape on one side can also be set to curved shape, arc-shaped can also be set to.In the case where being set to arc-shaped, also may be usedTo be, 2 relative sides are the arc-shapeds protruded towards outside, and other 2 relative sides are the arc-shapeds inwards protruded.In addition,The shape on each side can be set to the circular arc protruded towards outside and the continuous wavy wire shaped of the circular arc inwards protruded.WhenSo, the shape on each side can also be set to sine curve.
The part electrically connected in the electrode terminal 60A (60B) of the present invention with electrode pattern and outside wiring 62A (62B)Between resistance be preferably the Ω of 1 Ω~100 scope.In addition, as shown in Figure 3, grid-shaped is included in electrode terminal 60A (60B)In the case of shape 66, electrode terminal 60A (60B) sheet resistance value is preferably the Ω of 4 Ω/more than sq. 80/below sq. scope,The preferably Ω of 10 Ω/more than sq. 40/below sq. scope.
In addition, the light-transmitting portion in addition to metal fine that aperture opening ratio is electrode terminal 60A (60B) accounts for overall ratioExample, for example, 15 μm of line width, the aperture opening ratio of the square lattice 68 of 300 μm of spacing are 90%.
In addition, in the present invention, in the context of fig. 3, electrode pattern 16A (16B) transmitance is more than 83%, inciting somebody to actionWhen electrode pattern 16A (16B) transmitance is expressed as a%, preferred electrode terminal 60A (60B) transmitance be (a-20) % withUpper (a-3) below %.
In addition, in the present invention, in the context of fig. 3, electrode pattern 16A (16B) aperture opening ratio is more than 90%, inciting somebody to actionWhen electrode pattern 16A (16B) aperture opening ratio is expressed as b%, preferred electrode terminal 60A (60B) aperture opening ratio be (b-20) % withUpper (b-0.1) below %.In addition, here, aperture opening ratio is electrode terminal 60A (60B) translucency in addition to metal finePart accounts for overall ratio, for example, 15 μm of line width, the aperture opening ratio of the square lattice 68 of 300 μm of spacing are 90%.
(conducting strip of the 3rd touch panel)
The conducting strip of the 3rd touch panel of the present invention is configured to, and conducting strip 12A (12B) is provided with matrix 14AThe electrode pattern 16A (16B) being made up of the metal fine and electrode terminal 60A electrically connected with electrode pattern 16A (16B) end(60B), in above-mentioned conducting strip 12A (12B), electrode terminal 60A (60B) includes the mesh shape 66 being made up of grid 68, latticeSon 68 is made up of metal fine.
Fig. 2 shows that electrode terminal 60A (60B) is the situation for the mesh shape 66 being made up of grid 68, and the grid 68 is by goldBelong to fine rule to constitute.
Here, spacing of the spacing of electrode terminal 60A (60B) mesh shape 66 preferably than electrode pattern 16A (16B)It is close, more preferably less than the 3/4 of electrode pattern 16A (16B) spacing, more preferably less than 2/3, preferably 1/2.By making electricityThe mesh shape of extreme son is smaller than electrode pattern, can improve the electrical characteristic of electrode terminal, be able to maintain that signal detectionStability.The spacing of specific electrode terminal 60A (60B) mesh shape 66 is less than more than 50 μm 300 μm, preferably 50Less than 250 μm more than μm.In addition, electrode pattern 16A (16B) spacing is roughly equal with grid 24A (24B) edge lengthsValue.
As shown in Figure 3, by making electrode terminal 60A (60B) turn into what is be made up of the grid 68 constituted using metal fineMesh shape 66, it is different from existing butt end (planar terminal), in the sensing region (electrode pattern) of touch panel, electrodeTerminal is difficult to block the light that display is sent, so no longer occurring dimmed part near the electrode terminal of sensing region.CauseThis, visuality is not destroyed near the electrode terminal of sensing region.
Fig. 2 electrode terminal 60A (60B) is the mesh shape 66 being made up of the grid 68 constituted using metal fine,In Fig. 3, the frame shape 64 being made up of metal fine is set in the housing of the mesh shape 66 being made up of grid 68 of electrode terminal.That is, the situation that electrode terminal 60A (60B) is made up of frame shape 64 and mesh shape 66 is shown, the frame shape 64 is by metal fineConstitute, the mesh shape 66 is made up of grid 68, and grid 68 is made up of metal fine.
Here, when setting electrode pattern 16A (16B) line width of fine rule as A (μm), electrode terminal 60A (60B) frame shapeThe line width B (μm) of shape 64 preferably meets B >=2A or B >=A+5 (μm).
As shown in Figure 3, electrode terminal 60A (60B) is made up of frame shape 64 and mesh shape 66, and the frame shape 64 is by metalFine rule is constituted, and the mesh shape 66 is made up of grid 68, and grid 68 is made up of metal fine rule, so that sub with existing butt end(planar terminal) is different, can prevent light from being overflow due to electrode terminal in the sensing region (electrode pattern) of touch panelThe situation of reflection, therefore, it is possible to prevent from occurring dimmed part near the electrode terminal of sensing region.
In addition, in Fig. 2, Fig. 3 mesh shape 66, grid 68 has the shape of almost diamond.Here, so-called substantially water chestnutThe parallelogram of the shape representation diagonal substantial orthogonality of shape.
The part electrically connected in the electrode terminal 60A (60B) of the present invention with electrode pattern and outside wiring 62A (62B)Between resistance be preferably the Ω of 1 Ω~100 scope.In addition, in electrode terminal 60A (60B) as Fig. 2, Fig. 3, electrodeTerminal 60A (60B) sheet resistance value is preferably the Ω of 4 Ω/more than sq. 80/below sq. scope, preferably 10 Ω/sq. withUpper 40 Ω/below sq. scope.
In addition, in the present invention, electrode pattern 16A (16B) transmitance is more than 83%, by electrode pattern 16AWhen the transmitance of (16B) is expressed as a%, preferred electrode terminal 60A (60B) transmitance be (a-20) more than % (a-3) % withUnder.
In addition, in the present invention, electrode pattern 16A (16B) aperture opening ratio is more than 90%, by electrode pattern 16AWhen the aperture opening ratio of (16B) is expressed as b%, preferred electrode terminal 60A (60B) aperture opening ratio is (b-20) more than % (b-0.1) %Below.In addition, here, aperture opening ratio is that electrode terminal 60A (60B) light-transmitting portion in addition to metal fine accounts for overallRatio, for example, 15 μm of line width, the aperture opening ratio of the square lattice 68 of 300 μm of spacing are 90%.
As described above, according to the present invention, can prevent occurring dimmed part near the electrode terminal of sensing region, but makeFor other effects, in the case where manufacturing conducting strip 12A (12B) using the method for the exposure of following explanation, also with canThe effect for preventing the metal fine near the electrode terminal of sensing region more broad and rough than score.
Existing electrode terminal is sub (planar terminal) as butt end in order to possess high conductivity, so by exposing to makingFor the substantial amounts of light of partial illumination of electrode terminal.With as follows the problem of：The line width of electrode pattern is very small, and light is also transmittedMetal fine near the part as electrode pattern near to the electrode terminal, electrode terminal is more broad and rough than score.
That is, electrode terminal 60A (60B) transmitance or aperture opening ratio is set as the present invention, is passed through thus without having againThe situation to the substantial amounts of light of partial illumination as electrode terminal is exposed, the gold near the electrode terminal of sensing region can be preventedBelong to fine rule more broad and rough than score.
In addition, when being carried out with finger touch operation using the touch panel of the conducting strip of the present invention, response speed is rapid,Detection sensitivity is good.Even if in addition, touching more than 2 points and being operated, similarly resulting in good as a result, it is possible to shouldTo multiple point touching.
Then, the method for illustrating to manufacture the 1st conducting strip 12A or the 2nd conducting strip 12B.
In the case where manufacturing the 1st conducting strip 12A or the 2nd conducting strip 12B, such as to possessing on the 1st transparent base 14AAnd the 2nd the photosensitive material of the emulsion layer containing light sensitive silver halide salt on transparent base 14B be exposed, implement at developmentReason, thus can not form metallic silver portion (metal fine) and translucency portion (open region in exposure portion and unexposed portionDomain), form the 1st electrode pattern 16A and the 2nd electrode pattern 16B.Further, it is also possible to be shown by implementing physics to metallic silver portionShadow and/or plating, make metallic silver portion keep conductive metal.
Or, the light etchant resist on the copper foil that is formed in the 1st transparent base 14A and the 2nd transparent base 14B is carried outExposure, development treatment form corrosion-resisting pattern, and the copper foil exposed from corrosion-resisting pattern is etched, thus, it is possible to form the 1st electricityPole figure case 16A and the 2nd electrode pattern 16B.
Or, printing includes the slurry of metal microparticle on the 1st transparent base 14A and the 2nd transparent base 14B, rightSlurry carries out metal deposition, thus, it is possible to form the 1st electrode pattern 16A and the 2nd electrode pattern 16B.
In method the 1st electrode pattern 16A and the 2nd electrode pattern 16B of formation exposed using above-mentioned two, also haveThe effect more broad and rough than score of the metal fine near the electrode terminal of the invention to prevent sensing region can be passed through.
On the 1st transparent base 12A and the 2nd transparent base 12B, screen printing stencil or intaglio mould can also be usedVersion to form the 1st electrode pattern 16A and the 2nd electrode pattern 16B to print.Or, it is transparent in the 1st transparent base 14A and the 2ndOn matrix 14B, the 1st electrode pattern 16A and the 2nd electrode pattern 16B can be formed using ink-jet.
As shown in Figure 5 B, when forming the 1st electrode pattern 16A, transparent the 1st on an interarea in the 1st transparent base 14AWhen forming the 2nd electrode pattern 16B on matrix 14A another interarea, if according to common preparation method, using first to a masterThe method that face is exposed and then is exposed to another interarea, then can not obtain the 1st electrode with desired pattern sometimesPattern 16A and the 2nd electrode pattern 16B.
Thus, it may be preferable to using manufacture method as shown below.
That is, concentration exposure is carried out to the light sensitive silver halide emulsion layer formed on the 1st transparent base 14A two sides, the 1stThe 1st electrode pattern 16A is formed on a transparent base 14A interarea, is formed on the 1st transparent base 14A another interarea2nd electrode pattern 16B.
The concrete example of the manufacture method is illustrated.
First, the photosensitive material of strip is made.Photosensitive material has the 1st transparent base 14A, the 1st transparent base 14A'sThe light sensitive silver halide emulsion layer (hereinafter referred to as the 1st photosensitive layer) that is formed on one interarea and in the another of the 1st transparent base 14AThe light sensitive silver halide emulsion layer (hereinafter referred to as the 2nd photosensitive layer) formed on one interarea.
Then, photosensitive material is exposed.In the exposure-processed, in the exposure-processed, the 1st photosensitive layer is carried out1st exposure-processed, in the 1st exposure-processed, to the 1st transparent base 14A irradiation lights, along the 1st exposing patterns to the 1st photosensitive layerIt is exposed, the 2nd exposure-processed is carried out to the 2nd photosensitive layer, in the 2nd exposure-processed, to the 1st transparent base 14A irradiation lights, edgeThe 2nd exposing patterns to be exposed the 2nd photosensitive layer (two sides exposes simultaneously)..
For example, while the photosensitive material of strip is conveyed to a direction, while being shone across the 1st photomask the 1st photosensitive layerThe 1st light (directional light) is penetrated, and the 2nd light (directional light) is irradiated to the 2nd photosensitive layer across the 2nd photomask.By using in wayThe light projected from the 1st light source is converted to directional light to obtain the 1st light by the 1st collimation lens, saturating by using the 2nd collimation in wayThe light projected from the 2nd light source is converted to directional light to obtain the 2nd light by mirror.
In the above description, show a case that using two light sources (the 1st light source and the 2nd light source), but it is also possible to byThe light that optical system segmentation is projected from 1 light source, irradiates as the 1st light and the 2nd light to the 1st photosensitive layer and the 2nd photosensitive layer.
Then, by carrying out development treatment to the photosensitive material after exposure, for example, as shown in Figure 4 B, making touch panelWith conductive sheet 10.Touch panel conductive sheet 10 possesses the 1st transparent base 14A, along the 1st transparent base 14A's1st electrode pattern 16A of the 1st exposing patterns formed on one interarea and along the 1st transparent base 14A another master2nd electrode pattern 16B of the 2nd exposing patterns formed on face.In addition, the time for exposure of the 1st photosensitive layer and the 2nd photosensitive layer withAnd developing time carries out various change according to species of species or developer solution of the 1st light source and the 2nd light source etc., so can not uniteOne ground determines preferred number range, is adjusted so that visualization ratio turns into 100% time for exposure and developing time.
Then, in the manufacture method of present embodiment, the 1st exposure-processed is that for example bonding is configured on the 1st photosensitive layer1st photomask, the 1st light is irradiated from the 1st light source being oppositely disposed with the 1st photomask to the 1st photomask, thus photosensitive to the 1stLayer is exposed.Mask pattern (the 1st exposing patterns) structure that 1st photomask is formed by glass substrate and on the glass substrateInto the glass substrate is formed by transparent soda glass.Therefore, using the 1st exposure-processed, in the 1st photosensitive layer alongThe part of the 1st exposing patterns formed on the 1st photomask is exposed.Can be between the 1st photosensitive layer and the 1st photomask 146aThe gap of less than more than 2 μm 10 μm Zuo You of setting.
Equally, the 2nd exposure-processed is, such as the 2nd photomask of bonding configuration on the 2nd photosensitive layer, from the 2nd photomask2nd light source of relative configuration irradiates the 2nd light to the 2nd photomask, and thus the 2nd photosensitive layer is exposed.2nd photomask and the 1stPhotomask is same, and the mask pattern (the 2nd exposing patterns) formed by glass substrate and on the glass substrate is constituted, the glass basePlate is formed by transparent soda glass.Therefore, using the 2nd exposure-processed, in the 2nd photosensitive layer along in the 2nd photomaskThe part of 2nd exposing patterns of upper formation is exposed.Now, can be set between the 2nd photosensitive layer and the 2nd photomask 2 μm withUpper less than 10 μm Zuo You of gap.
In the 1st exposure-processed and the 2nd exposure-processed, by the injection moment of the 1st light from the 1st light source and it can comeIt is set to identical from the injection moment of the 2nd light of the 2nd light source, can also be set to different.If set to it is identical, then can be in 1 exposureIn light processing, while being exposed to the 1st photosensitive layer and the 2nd photosensitive layer, reduction in processing time can be realized.
Then, in the 1st conducting strip 12A of present embodiment and the 2nd conducting strip 12B, in the way of particularly preferably spyDescribed centered on the method for using silver halide picture photosensitive material.
The 1st conducting strip 12A and the 2nd conducting strip 12B of present embodiment manufacture method are according to photosensitive material and developmentThe form of processing includes 3 following forms.
Mode (1) carries out chemical development to the light sensitive silver halide black and white photosensitive material not comprising physical development nuclei or heat is aobviousShadow, metallic silver portion is formed on the photosensitive material.
Mode (2) is to the light sensitive silver halide black and white photosensitive material progress comprising physical development nuclei in silver halide emulsion layerPhysical development is dissolved, metallic silver portion is formed on the photosensitive material.
Mode (3) makes the light sensitive silver halide black and white photosensitive material not comprising physical development nuclei with having comprising physical developmentThe video boards of the non-photosensitive layer of core are overlapped, and be diffused transfer development, metallic silver portion is formed on non-photosensitive video boards.
The mode of above-mentioned (1) is one-piece type black-and-white development type, and transparent conductive film etc. is formed on photosensitive material thoroughlyPhotosensitiveness conductive film.The developed silver obtained is chemical development silver or heat development silver, in the long filament side as high specific surface areaFace, activity is higher during follow-up plating or physical development.
The mode of above-mentioned (2) is, by being deposited on after the silver halide particle dissolving near physical development nuclei in exposure portionDevelop on core, so as to form the transparent conductive films such as transparent conductive film on photosensitive material.This is also one-piece type black and whiteDevelopment type.Because development effect is the precipitation on physical development nuclei, activity is higher, and developed silver is that specific surface area is smallerIt is spherical.
The mode of above-mentioned (3) is to be spread after being dissolved in unexposed portion by silver halide particle and deposit to video boardsDevelop on core, so as to form the transparent conductive films such as transparent conductive film on video boards.Which is so-called separationType, is the mode peeled off video boards from photosensitive material and used.
A development in minus development treatment and anti-phase development treatment can be selected (to expand in arbitrary modeIn the case of dissipating transfer modes, it can be carried out by using direct eurymeric (autopositive) photosensitive material as photosensitive materialMinus development treatment)..
Hereinafter, the structure to the 1st conducting strip 12A and the 2nd conducting strip 12B of present embodiment each layer is carried out in detailExplanation.
[the 1st transparent base 14A, the 2nd transparent base 14B]
As the 1st transparent base 14A and the 2nd transparent base 14B, plastic foil, plastic plate, glass plate etc. can be enumerated.EspeciallyIt is from the viewpoint of translucency or processability etc., preferably PET.
[silver salt emulsion layer]
It is used as the 1st conducting strip 12A the 1st electrode pattern 16A and the 2nd conducting strip 12B the 2nd electrode pattern 16B silverSalt emulsion layer, in addition to silver salt and adhesive, also containing the additive such as solvent or dyestuff.
As the silver salt used in the present embodiment, the organic silvers such as the inorganic silver salt such as silver halide and silver acetate can be enumeratedSalt.In the present embodiment, it is preferred to use be used as the good silver halide of the characteristic of OPTICAL SENSORS.
The silver coating amount (coating amount of silver salt) of silver salt emulsion layer is scaled silver-colored preferably 1g/m2Above 30g/m2Hereinafter, it is more excellentSelect 1g/m2Above 25g/m2Hereinafter, best 5g/m2Above 20g/m2Below.By making the silver coating amount turn into above range,Desired sheet resistance can be obtained when being made touch panel conducting strip 10.
As the adhesive used in the present embodiment, for example, it can enumerate gelatin, polyvinyl alcohol (PVA), polyethylene pyrroleThe polysaccharides such as pyrrolidone (PVP), starch, cellulose and its derivates, PEO, polyvinylamine, chitosan, poly- bad ammoniaAcid, polyacrylic acid, ALG, poly- hyaluronic acid, carboxycellulose etc..During they have due to the ionic of functional groupProperty, the property of anionic property, cationic.
The amount of adhesive to containing in the silver salt emulsion of present embodiment layer is not particularly limited, and can playCan suitably it be determined in the range of dispersiveness and cohesive.On the amount of the adhesive in silver salt emulsion layer, silver/adhesive bodyProduct ratio preferably more than 1/4, more preferably more than 1/2.Silver/adhesive volume ratio is preferably less than 100/1, more preferably 50/1Below.In addition, silver/adhesive volume ratio is more preferably less than more than 1/1 4/1.Preferably less than more than 1/1 3/1.By making silverSilver/adhesive volume ratio in salt emulsion layer turns into this scope, can also suppress electricity in the case of silver coating amount is adjustedThe deviation of resistance, and result in the touch panel conducting strip with uniform outer surface resistance.In addition, can be by by the halogen of raw materialChange silver-colored amount/amount of binder (weight ratio) to be transformed to silver-colored amount/amount of binder (weight ratio), become silver-colored amount/amount of binder (weight ratio)Silver-colored amount/amount of binder (volume ratio) is changed to, silver/adhesive volume ratio is obtained.
<Solvent>
Solvent for forming silver salt emulsion layer is not particularly limited, for example, can enumerate water, organic solvent (for example, methanolDeng the esters such as the sulfoxide types such as the amines such as the ketones such as alcohol type, acetone, formamide, dimethyl sulfoxide (DMSO), ethyl acetate, ethers etc.), fromSub- property liquid and their mixed solvent.
What the amount of the solvent used in the silver salt emulsion layer of present embodiment was included relative to silver salt emulsion layerTotal quality of silver salt, adhesive etc. is the scope of 30~90 mass % scope, preferably 50~80 mass %.
<Other additives>
Various additives on using in the present embodiment are not particularly limited, and preferably use known additive.
[other Rotating fields]
Protective layer (not shown) can also be set on silver salt emulsion layer.In the present embodiment, so-called " protective layer " isThe layer that the adhesive as gelatin or high molecular polymer is constituted, the effect of scratch or mechanical characteristic is prevented in order to show improvementReally, formed on photosensitive silver salt emulsion layer.Its thickness is preferably less than 0.5 μm.The coating method of protective layer andForming method is not particularly limited, and can suitably select known coating method and forming method.In addition, in silver salt emulsion layerUnder can also set and for example descend coating.
Then, each process of the 1st conducting strip 12A and the 2nd conducting strip 12B preparation method is illustrated.
[exposure]
In the present embodiment, implement the 1st electrode pattern 16A's and the 2nd electrode pattern 16B comprising utilization mode of printingSituation, but in addition to mode of printing, the 1st electrode pattern 16A and the 2nd electrode pattern are also formed by exposed and developed etc.16B.That is, to be arranged on the 1st transparent base 14A and the 2nd transparent base 14B have the silver salt photosensitive material that contains layer orPhotoetching has been applied to be exposed with the photosensitive material of photopolymer.It is exposed using electromagnetic wave.As electromagnetic wave, for example may be usedEnumerate radioactive ray such as light, the x-ray of luminous ray, ultraviolet etc. etc..In addition, using the light with Wavelength distribution in exposureSource, can also use the light source of specific wavelength.
On exposure method, the method preferably via glass shade or the pattern exposure mode based on laser description.
[development treatment]
In the present embodiment, after being exposed to emulsion layer, development treatment is carried out.Development treatment can be used in silver saltPhotographic film, photographic paper, halftone screen film or photomask are with the common development treatment technology used in latex shade etc..
Development treatment in the present invention can include what is carried out to remove for the purpose of the silver salt of unexposed portion is stabilized itFixing processing.Fixing processing in the present invention is using in silver salt photographic, photographic paper, halftone screen film or photomaskWith the technology of the fixing processing used in latex shade etc..
Implement development, the photosensitive material of fixing processing and be preferable to carry out dura mater processing, washing process, stabilization processes.
The quality for the argent that exposure portion after development treatment is included is relative to the silver that the exposure portion before exposure is includedQuality be preferably more than 50 mass % containing ratio, more preferably more than 80 mass %.The silver-colored quality that exposure portion is includedAs long as silver-colored more than the mass % of quality 50 included relative to the exposure portion before exposure, it becomes possible to obtain high conductivity, becauseThis is preferred.
Process by the above obtains conducting strip, the sheet resistance of the conducting strip obtained be preferably 100 ohm/sq. withUnder, more preferably 80 ohm/below sq., more preferably 60 ohm/below sq., preferably 40 ohm/below sq..Although tableThe lower limit of surface resistance is more low better, but generally, as long as it is sufficient that 0.01 ohm/sq., even 0.1 ohm/Or 1 ohm/sq. can also be used according to purposes sq..
By adjusting sheet resistance in such scope, even with the large-scale touch that area is 10cm × more than 10cmPanel, can also carry out position detection.Furthermore it is possible to further carry out calendering process or steam to the conducting strip after development treatmentThe electric conductivity raisings such as processing processing, desired sheet resistance is adjusted to using calendering process.
[physical development and plating]
In the present embodiment, using improve using above-mentioned exposure and development treatment formation metallic silver portion electric conductivity asPurpose, can carry out physical development and/or the plating for making above-mentioned metallic silver portion keep conductive metal particle.In this hairMetallicity silver portion can be made to keep conductive metal particle, also be can be combined merely with physical development or a side of plating in brightPhysical development and plating make metallic silver portion keep conductive metal particle.In addition, showing including implementing physics to metallic silver portionPart after shadow and/or plating is referred to as " conductive metallic portion ".
[oxidation processes]
In the present embodiment, after preferred pair development treatment metallic silver portion and utilization physical development and/or platingThe conductive metallic portion of formation implements oxidation processes., can be by entering for example in translucency portion somewhat in the case of deposited metalRow oxidation processes remove the metal, make the transmittance substantially 100% in translucency portion.
[electrode pattern]
The line width of the 1st electrode pattern 16A and the 2nd electrode pattern 16B of present embodiment metal fine can be from 30 μmSelected below, but when being the purposes as the material of touch panel, the lower limit of the line width of metal fine is preferably 0.7μm, more preferably 1 μm, preferably 2 μm.The higher limit of the line width of metal fine is preferably 15 μm, more preferably 9 μm, preferably 7μm。
Existing electrode terminal is sub (planar terminal) as butt end in order to possess high conductivity, by exposing to being used as electricityThe substantial amounts of light of partial illumination of extreme son.As described above, the line width of electrode pattern is very small, sometimes by the shadow of the substantial amounts of lightRing.It is especially online a width of less than 9 μm, specifically for less than 7 μm when, its influence becomes obvious, there is the metal near electrode terminalThe problem of fine rule is more broad and rough than score.
Line interval (grid spacing) is preferably less than more than 100 μm 400 μm, preferably less than more than 200 μm 300 μm.SeparatelyOutside, for the purpose of grounding connection etc., metal fine can have the part wider than 200 μm.
[translucency portion]
" translucency portion " in present embodiment is the 1st electrode pattern in the 1st conducting strip 12A and the 2nd conducting strip 12BThe part with translucency beyond 16A and the 2nd electrode pattern 16B.On the transmissivity in translucency portion, as described above,1st transparent base 14A and the 2nd transparent base 14B 380nm~780nm's in addition to light absorbs and reflection are contributed toTransmissivity shown in the minimum value of transmissivity in wavelength region is more than 83%, preferably more than 85%, more preferably 90%More than, more preferably more than 93%, preferably more than 99%.
[the 1st conducting strip 12A and the 2nd conducting strip 12B]
The 1st transparent base 14A and the 2nd in 1st conducting strip 12A of present embodiment and the 2nd conducting strip 12B is transparentMatrix 14B thickness is preferably less than more than 5 μm 350 μm, more preferably less than more than 30 μm 150 μm.As long as more than 5 μmLess than 350 μm of scope just results in desired transmission of visible light, and is easily processed.
The coating that silver salt according to being applied on the 1st transparent base 14A and the 2nd transparent base 14B contains layer coatingThickness, suitably determines the thickness of metallic silver portion set on the 1st transparent base 14A and the 2nd transparent base 14B.ArgentThe thickness in portion can be selected from more than 0.001mm below 0.2mm scope, preferably less than 30 μm, more preferably less than 20 μm,More preferably less than more than 0.01 μm 9 μm, preferably less than more than 0.05 μm 5 μm.In addition, metallic silver portion is preferably pattern shapeShape.Metallic silver portion can be 1 layer or more than 2 layers of double-layer structure.Metallic silver portion be pattern form and be 2 layers withOn double-layer structure when, it is photosensitive in order to be carried out to different wavelength, different colour sensitivity can be assigned.Thus, when change exposesWhen optical wavelength is exposed, different patterns are formed in each layer.
As the purposes of touch panel, the thickness of conductive metallic portion is thinner, and the angle of visual field of display panel is wider, so excellentChoosing, in terms of visuality is improved, it is also desirable to filming.According to such viewpoint, the conduction kept by conductive metallic portionProperty the thickness of layer that constitutes of metal be preferably smaller than 9 μm, more preferably 0.1 μm less than 5 μm, preferably more than 0.1 μm andLess than 3 μm.
In the present embodiment, the argent of expectation thickness is formed by controlling the applied thickness that above-mentioned silver salt contains layerPortion, also freely controls the thickness of layer being made up of conductive metal particle using physical development and/or plating, soEven the 1st conducting strip 12A and the 2nd conducting strip 12B with less than 5 μm, preferably smaller than 3 μm of thickness, also can be easyGround is formed.
The conducting strip and touch panel of the present invention is not limited to above-mentioned embodiment, it is clear that can not depart from the present invention'sVarious structures are used in the range of purport.Furthermore it is possible to Japanese Unexamined Patent Publication 2011-113149, Japanese Unexamined Patent Publication 2011-129501,Technology disclosed in Japanese Unexamined Patent Publication 2011-129112, Japanese Unexamined Patent Publication 2011-134311, Japanese Unexamined Patent Publication 2011-175628 etc. is appropriateCombine and used.
Embodiment
Hereinafter, embodiments of the invention are lifted and is further elaborated with the present invention in the future.In addition, shown in following embodimentMaterial, usage amount, ratio, process content, processing sequence etc. just can be changed suitably without departing from the purport of the present invention.Therefore, simultaneously non-used concrete example as shown below is explained the scope of the present invention with limiting.
Transmitance or aperture opening ratio are determined to the laminated conductive piece involved by sample, visuality is have rated.
(photosensitive silve halide material)
Modulate the iodine comprising gelatin 10.0g, containing 0.1 μm of the suitable footpath average out to of ball relative to the Ag150g in aqueous mediumThe emulsion of bromine chlorination silver particles (I=0.2 moles of %, Br=40 moles of %).
In addition, adding K in the emulsion3Rh2Br9And K2IrCl6, concentration is turned into 10-7(moles/mole silver), in bromineChange doping Rh ions and Ir ions in silver particles.Na is added in the emulsion2PdCl4, also entered using gold chloride and sodium thiosulfate(here, row gold sulphur sensitizing, then, be coated to the 1st transparent base 14A and the 2nd transparent base 14B together with gelatin hard coat agentAll it is polyethylene terephthalate (PET)) on, making the coating amount of silver turns into 10g/m2.Now, Ag/ gelatin volume ratio is2/1。
With the coating of 25cm width progress 20m/ minutes on width 30cm pet substrate, to retain the center of coatingTwo ends are cut 3cm respectively and obtain the photosensitive silve halide material of web-like by portion 24cm mode.
(exposure)
On the pattern of exposure, the 1st conducting strip 12A with the pattern shown in Fig. 1 and Fig. 3, the 2nd conducting strip 12B with Fig. 4 A,Pattern shown in Fig. 4 B and Fig. 6 B, in the 1st transparent base 14A and the 2nd transparent base of A4 sizes (210mm × 297mm)It is exposed on 14B.The directional light using high-pressure mercury-vapor lamp as light source is used to be exposed via the photomask of above-mentioned pattern.ThisOutside, the 1st conducting strip 12A and the 2nd conducting strip 12B electrode terminal 60A and electrode terminal 60B is according to complete shown in Fig. 1~3Portion's pattern makes sample respectively.
(development treatment)
Developer solution 1L is formulated
Fixing solution 1L prescriptions
The automatic processing machine FG-710PTS manufactured using Fuji Photo Film Co., Ltd. finishes material using above-mentioned inorganic agent to exposureWith following treatment conditions handle within 20 seconds, the treatment conditions are 35 DEG C of development 30 seconds, it is fixing 34 DEG C 23 seconds, cleaning flowing water(5L/ minutes).
[experiment 1]
(sample 1-1) embodiment
The 1st conducting strip 12A and the 2nd conducting strip 12B conductive part (the 1st electrode pattern 16A, the 2nd electrode pattern madePermeability 16B) is 83%.The 1st conducting strip 12A and the 2nd conducting strip 12B electrode terminal 60A and electrode tip madeSub- 60B is Fig. 1 pattern, and permeability is 63%.
(sample 1-2) embodiment
Except making the 1st conducting strip 12A of making and the 2nd conducting strip 12B electrode terminal 60A and electrode terminal 60BPermeability turn into 80% beyond, it is all identical with sample 1-1.
(sample 1-3) comparative example
Except making the 1st conducting strip 12A of making and the 2nd conducting strip 12B electrode terminal 60A and electrode terminal 60BPermeability be 60% beyond, it is all identical with sample 1-1.
(sample 1-4) comparative example
Except making the 1st conducting strip 12A of making and the 2nd conducting strip 12B electrode terminal 60A and electrode terminal 60BPermeability be 83% beyond, it is all identical with sample 1-1.
(sample 1-5) embodiment
The 1st conducting strip 12A and the 2nd conducting strip 12B conductive part (the 1st electrode pattern 16A, the 2nd electrode pattern madePermeability 16B) is 90%.The 1st conducting strip 12A and the 2nd conducting strip 12B electrode terminal 60A and electrode tip madeSub- 60B is Fig. 1 pattern, and permeability is 70%.
(sample 1-6) embodiment
Except making the 1st conducting strip 12A of making and the 2nd conducting strip 12B electrode terminal 60A and electrode terminal 60BPermeability be 87% beyond, it is all identical with sample 1-5.
(sample 1-7) comparative example
Except making the 1st conducting strip 12A of making and the 2nd conducting strip 12B electrode terminal 60A and electrode terminal 60BPermeability be 67% beyond, it is all identical with sample 1-5.
(sample 1-8) comparative example
Except making the 1st conducting strip 12A of making and the 2nd conducting strip 12B electrode terminal 60A and electrode terminal 60BPermeability be 90% beyond, it is all identical with sample 1-5.
(sample 1-9) embodiment
The 1st conducting strip 12A and the 2nd conducting strip 12B conductive part (the 1st electrode pattern 16A, the 2nd electrode pattern madePermeability 16B) is 83%.The 1st conducting strip 12A and the 2nd conducting strip 12B electrode terminal 60A and electrode tip madeSub- 60B is Fig. 2 pattern, and permeability is 63%.
(sample 1-10) embodiment
Except making the 1st conducting strip 12A of making and the 2nd conducting strip 12B electrode terminal 60A and electrode terminal 60BPermeability be 80% beyond, it is all identical with sample 1-9.
(sample 1-11) comparative example
Except making the 1st conducting strip 12A of making and the 2nd conducting strip 12B electrode terminal 60A and electrode terminal 60BPermeability be 60% beyond, it is all identical with sample 1-9.
(sample 1-12) comparative example
Except making the 1st conducting strip 12A of making and the 2nd conducting strip 12B electrode terminal 60A and electrode terminal 60BPermeability be 83% beyond, it is all identical with sample 1-9.
(sample 1-13) embodiment
The 1st conducting strip 12A and the 2nd conducting strip 12B conductive part (the 1st electrode pattern 16A, the 2nd electrode pattern madePermeability 16B) is 83%.The 1st conducting strip 12A and the 2nd conducting strip 12B electrode terminal 60A and electrode tip madeSub- 60B is Fig. 3 pattern, and permeability is 63%.
(sample 1-14) embodiment
Except making the 1st conducting strip 12A of making and the 2nd conducting strip 12B electrode terminal 60A and electrode terminal 60BPermeability be 80% beyond, it is all identical with sample 1-13.
(sample 1-15) comparative example
Except making the 1st conducting strip 12A of making and the 2nd conducting strip 12B electrode terminal 60A and electrode terminal 60BPermeability be 60% beyond, it is all identical with sample 1-13.
(sample 1-16) comparative example
Except making the 1st conducting strip 12A of making and the 2nd conducting strip 12B electrode terminal 60A and electrode terminal 60BPermeability be 83% beyond, it is all identical with sample 1-13.
<The measure of transmitance>
For the 1st conducting strip 12A and the 2nd conducting strip 12B, total light transmittance is determined using light-metering machine.Light-metering machineThe TC-HIIIDPK manufactured using Tokyo electricity Se companies is measured.
<Visual evaluation>
The touch panel of projection type electrostatic capacity has been made using the laminated conductive plate of above-mentioned sample respectively.In rotationTouch panel is set on rotating disk, when driving liquid crystal display device display white, with the naked eye the electrode in sensing region is recognizedWhether shade (dimmed part) is able to confirm that near terminal.
A is evaluated as to visual outstanding situation, B is evaluated as to visual good situation, to the not shadow in terms of practicalityRing visual situation and be evaluated as C, the situation to visual difference is evaluated as D.
<The evaluation of response speed>
The situation outstanding to response speed is evaluated as A, and the situation good to response speed is evaluated as B, in practicalityThe unquestioned situation of response speed is evaluated as C, slow to response speed and the poor situation of detection sensitivity is evaluated as D.
【Table 1】
<As a result 1>
As shown in Table 1, in the sample of the permeability scope in the present invention in sample 1-1~16, visuality is goodAlright.In addition, understanding in the sample of the permeability scope in the present invention in sample 1-1~16, touched when being touched with fingerWhen touching panel and being operated, response speed is rapid, and detection sensitivity is good.More than 2 points progress are being touched in addition, further acknowledgingDuring operation, good result is equally resulted in, additionally it is possible to tackle multiple point touching.
[experiment 2]
(sample 2-1) embodiment
The 1st conducting strip 12A and the 2nd conducting strip 12B conductive part (the 1st electrode pattern 16A, the 2nd electrode pattern madeAperture opening ratio 16B) is 90%.The 1st conducting strip 12A and the 2nd conducting strip 12B electrode terminal 60A and electrode tip madeSub- 60B is the pattern shown in Fig. 5 A and Fig. 5 B, and aperture opening ratio is 70%.
(sample 2-2) embodiment
Except making the 1st conducting strip 12A of making and the 2nd conducting strip 12B electrode terminal 60A and electrode terminal 60BAperture opening ratio be 89.9% beyond, it is all identical with sample 2-1.
(sample 2-3) comparative example
Except making the 1st conducting strip 12A of making and the 2nd conducting strip 12B electrode terminal 60A and electrode terminal 60BAperture opening ratio be 68% beyond, it is all identical with sample 2-1.
(sample 2-4) comparative example
Except making the 1st conducting strip 12A of making and the 2nd conducting strip 12B electrode terminal 60A and electrode terminal 60BAperture opening ratio be 90% beyond, it is all identical with sample 2-1.
(sample 2-5) embodiment
The 1st conducting strip 12A and the 2nd conducting strip 12B conductive part (the 1st electrode pattern 16A, the 2nd electrode pattern madeAperture opening ratio 16B) is 97%.The 1st conducting strip 12A and the 2nd conducting strip 12B electrode terminal 60A and electrode tip madeSub- 60B is the pattern shown in Fig. 5 A and Fig. 5 B, and aperture opening ratio is 77%.
(sample 2-6) embodiment
Except making the 1st conducting strip 12A of making and the 2nd conducting strip 12B electrode terminal 60A and electrode terminal 60BAperture opening ratio turn into 96.9% beyond, it is all identical with sample 2-5.
(sample 2-7) comparative example
Except making the 1st conducting strip 12A of making and the 2nd conducting strip 12B electrode terminal 60A and electrode terminal 60BAperture opening ratio turn into 75% beyond, it is all identical with sample 2-5.
(sample 2-8) comparative example
Except making the 1st conducting strip 12A of making and the 2nd conducting strip 12B electrode terminal 60A and electrode terminal 60BAperture opening ratio turn into 97% beyond, it is all identical with sample 2-5.
(sample 2-9) embodiment
The 1st conducting strip 12A and the 2nd conducting strip 12B conductive part (the 1st electrode pattern 16A, the 2nd electrode pattern madeAperture opening ratio 16B) is 90%.The 1st conducting strip 12A and the 2nd conducting strip 12B electrode terminal 60A and electrode tip madeSub- 60B is the pattern shown in Fig. 6 A and Fig. 6 B, and aperture opening ratio is 70%.
(sample 2-10) embodiment
Except making the 1st conducting strip 12A of making and the 2nd conducting strip 12B electrode terminal 60A and electrode terminal 60BAperture opening ratio turn into 89.9% beyond, it is all identical with sample 2-9.
(sample 2-11) comparative example
Except making the 1st conducting strip 12A of making and the 2nd conducting strip 12B electrode terminal 60A and electrode terminal 60BAperture opening ratio turn into 68% beyond, it is all identical with sample 2-9.
(sample 2-12) comparative example
Except making the 1st conducting strip 12A of making and the 2nd conducting strip 12B electrode terminal 60A and electrode terminal 60BAperture opening ratio turn into 90% beyond, it is all identical with sample 2-9.
(sample 2-13) embodiment
The 1st conducting strip 12A and the 2nd conducting strip 12B conductive part (the 1st electrode pattern 16A, the 2nd electrode pattern madeAperture opening ratio 16B) is 90%.The 1st conducting strip 12A and the 2nd conducting strip 12B electrode terminal 60A and electrode tip madeSub- 60B is Fig. 7 pattern, and aperture opening ratio is 70%.
(sample 2-14) embodiment
Except making the 1st conducting strip 12A of making and the 2nd conducting strip 12B electrode terminal 60A and electrode terminal 60BAperture opening ratio turn into 89.9% beyond, it is all identical with sample 2-13.
(sample 2-15) comparative example
Except making the 1st conducting strip 12A of making and the 2nd conducting strip 12B electrode terminal 60A and electrode terminal 60BAperture opening ratio turn into 68% beyond, it is all identical with sample 2-13.
(sample 2-16) comparative example
Except making the 1st conducting strip 12A of making and the 2nd conducting strip 12B electrode terminal 60A and electrode terminal 60BAperture opening ratio turn into 90% beyond, it is all identical with sample 2-13.
<The measure of aperture opening ratio>
The micro indicator VHX-200 manufactured using KEYENCE companies, the 1st conducting strip with 3000 times of conditioned measurement12A and the 2nd conducting strip 12B.
<Visual evaluation>
The touch panel of projection type electrostatic capacity has been made using the laminated conductive plate of above-mentioned sample respectively.In rotationTouch panel is set on rotating disk, when driving liquid crystal display device display white, with the naked eye the electrode in sensing region is recognizedWhether shade (dimmed part) is able to confirm that near terminal.
A is evaluated as to visual outstanding situation, B is evaluated as to visual good situation, to the not shadow in terms of practicalityRing visual situation and be evaluated as C, the situation to visual difference is evaluated as D.
<The evaluation of response speed>
The situation outstanding to response speed is evaluated as A, and the situation good to response speed is evaluated as B, in practicalityThe unquestioned situation of response speed is evaluated as C, slow to response speed and the poor situation of detection sensitivity is evaluated as D.
【Table 2】
<As a result 2>
As shown in Table 2, in the sample of the aperture opening ratio scope in the present invention in sample 2-1~16, visuality is goodAlright.In addition, understanding in the sample of the aperture opening ratio scope in the present invention in sample 2-1~16, touched when being touched with fingerWhen touching panel and being operated, response speed is rapid, and detection sensitivity is good.More than 2 points progress are being touched in addition, further acknowledgingDuring operation, good result is equally resulted in, additionally it is possible to tackle multiple point touching.
The conducting strip and touch panel of the present invention is not limited to above-mentioned embodiment, it is clear that can not depart from the present invention'sVarious structures are used in the case of purport.
Label declaration
10 ... (touch panel use) conducting strips, 12A ... (the 1st) conducting strip, 12B ... (the 2nd) conducting strip, 14A ... (the 1st) is thoroughlyBright matrix, 14B ... (the 2nd) transparent base, 16A ... (the 1st) electrode pattern, 16B ... (the 2nd) electrode pattern, 18A ... (the 1st) is ledElectrical pattern, 18B ... (the 2nd) conductive pattern, 20A ... (the 1st) non-conductive pattern, 20B ... (the 2nd) non-conductive pattern, 22A ... broken stringsPortion, 22B ... disconnection portions, 24A ... grid, 24B ... grid, 60A ... (the 1st) electrode terminal, 60B ... (the 2nd) electrode terminal,Connect up, connected up outside 62B ... (2nd), 64 ... frame shapes, 66 ... mesh shapes, 68 ... grid, 70 ... groups outside 62A ... (1st)Close pattern.